Joint International Research Laboratory of Water and Nutrient in Crop, Fujian Provincial Key Laboratory of Plant Functional Biology and College of Resources and Environment, College of JunCao Science and Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
State Key Laboratory of Vegetable Biobreeding, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural Affairs, Sino-Dutch Joint Laboratory of Horticultural Genomics, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China.
Genes (Basel). 2024 Aug 9;15(8):1049. doi: 10.3390/genes15081049.
Phosphorus is critical for plant growth but often becomes less accessible due to its precipitation with cations in soil. Fabaceae, a diverse plant family, exhibits robust adaptability and includes species like , known for its efficient phosphorus utilization via cluster roots. Here, we systematically identified phosphorus-utilization-efficiency (PUE) gene families across 35 Fabaceae species, highlighting significant gene amplification in PUE pathways in Fabaceae. Different PUE pathways exhibited variable amplification, evolution, and retention patterns among various Fabaceae crops. Additionally, the number of homologous genes of the root hair development gene in was far more than that in other Fabaceae species. Multiple copies of the gene were amplified and retained in after whole genome triplication. The gene structure and motifs specifically retained in were different from homologous genes in other plants. Combining transcriptome analysis under low-phosphorus treatment, it was found that most of the homologous genes of in showed high expression in the cluster roots, suggesting that the gene family plays an important role in the adaptation process of to low-phosphorus environments and the formation of cluster roots.
磷是植物生长的关键元素，但由于其在土壤中与阳离子形成沉淀，常常变得难以利用。豆科是一个多样化的植物科，表现出强大的适应性，其中包括一些物种，如 ，以其通过簇生根高效利用磷而闻名。在这里，我们系统地鉴定了 35 种豆科植物中的磷利用效率（PUE）基因家族，突出了豆科植物中 PUE 途径的显著基因扩增。不同的 PUE 途径在各种豆科作物中表现出不同的扩增、进化和保留模式。此外，在 中，根毛发育基因 的同源基因数量远远超过其他豆科植物。在全基因组三倍体化后， 基因发生了大量扩增和保留。 基因在 中特异性保留的基因结构和基序与其他植物的同源基因不同。结合低磷处理下的转录组分析，发现 中 的同源基因大多数在簇根中高表达，这表明 基因家族在 适应低磷环境和簇生根形成的过程中发挥着重要作用。
